This card may seem like it is trash. It may seem like it is terrible. It may seem like it's all far too much tempo and life lost to be of any good. It certainly doesn't feel Mythic. (Had Mythic existed in Kamigawa Block, I think this might have been considered for Mythic Rarity...though possibly just rare and Legendary is enough.)

Now go back to your binders, look at your creatures, and pick out all the ones you wish had haste for free (as in no mana. The Necropotence Lesson teaches us that life is generally worth paying because it's not mana and therefore fast. fast = worth. it. If you forgot or weren't around for the Necropotence Lesson, you can also check The Fetch Land Lesson, and the Ravnica Dual Land Lesson)

Now put all your creature cards back into your binder.

It may not look like much, but it's got it where it counts. Haste is as deceptively powerful, as Double Strike is completely obviously powerful. (Speaking of which, Hall of Bandit Lord + Double Strike or Lifel... (see all)

one of my friends gave me this for free so I was thinking up all the combos I could use with it and how I could use it to kill his decks and such and he took it back and it makes me cry every time he summons a creature with it...

This card is mind-bendingly good in EDH. Not only can it haste up your lethal-in-one-hit mimeoplasm or whatever, it can guarantee you an activation of your Arcum or Sisay or Arcanis or Marrow-Gnawer or Hidetsugu or any number of other potential commanders with {T} abilities.